What’s Vulnerable › Vulnerabilities

CVE-2023-28140: Executable Hijacking

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-18 · updated 2026-06-17
• Weakness: CWE-427

Description

An Executable Hijacking condition exists in the Qualys Cloud Agent for Windows platform in versions before 4.5.3.1. Attackers may load a malicious copy of a Dependency Link Library (DLL) via a local attack vector instead of the DLL that the application was expecting, when processes are running with escalated privileges. This vulnerability is bounded only to the time of uninstallation and can only be exploited locally. At the time of this disclosure, versions before 4.0 are classified as End of Life.

Affected products

• Qualys Cloud Agent: from 3.1.3.34 before 4.5.3.1 — fixed in 4.5.3.1

How to fix

Upgrade to a fixed version: Qualys Cloud Agent 4.5.3.1. Check the vendor advisory for mitigations.

References

• https://www.qualys.com/security-advisories/
• https://www.qualys.com/security-advisories/

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